Dome-shaped illumination device



FIG. 1 is a perspective view of a dome-shaped illumination device showing our new design with the light bulbs thereof shown in phantom for illustrative purposes only so that it forms no part of the claimed design:

FIG. 2 is a side view in elevation thereof:

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a dome-shaped illumination device, as shown and described. 